Brown ring patch and nitrogen
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Results of 2008 field trial on brown ring patch, Waitea circinata, management. Top row of photos treated with ammonium sulfate (0.5 lb N/1000 sq ft) on 4/7 and 4/21/08. Bottom row were not treated with nitrogen. No fungicides were applied. Photos taken 5/2/08 on Poa annua greens. Investigators Frank Wong and Chi-Men Chen (UC Riverside) and Larry Stowell (PACE). Cooperators Wayne Carpenter and Jon Maddern (Torrey Pines GC).
Turf Diseases